hybrid vehicle having an engine and two electric motors and hydraulic

motorization assembly for a hybrid vehicle, intended to be complementary to a powertrain equipped with a thermal engine (2) and a transmission (4) driving a first axle of the vehicle (8), characterized in that it comprises a transmission (16) provided for driving the second vehicle axle (20) and an electric motor (10) and a hydraulic actuator (22) connected to this auxiliary transmission coupling means (14, 26 ).